mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-23 18:14:29 +08:00
first cut of Ethernet 802.3AH OAM TLV parser code:
-add support for Code Information TLV FIXME boundary checks
This commit is contained in:
hannes
parent
a7c96d7bcb
commit
194e9d1e35
163
print-slow.c
163
print-slow.c
@ -20,7 +20,7 @@
|
||||
|
||||
#ifndef lint
|
||||
static const char rcsid[] _U_ =
|
||||
"@(#) $Header: /tcpdump/master/tcpdump/print-slow.c,v 1.2 2006-02-16 16:42:44 hannes Exp $";
|
||||
"@(#) $Header: /tcpdump/master/tcpdump/print-slow.c,v 1.3 2006-05-15 02:02:53 hannes Exp $";
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
@ -37,6 +37,7 @@ static const char rcsid[] _U_ =
|
||||
#include "extract.h"
|
||||
#include "addrtoname.h"
|
||||
#include "ether.h"
|
||||
#include "oui.h"
|
||||
|
||||
struct slow_common_header_t {
|
||||
u_int8_t proto_subtype;
|
||||
@ -85,6 +86,89 @@ static const struct tok slow_oam_code_values[] = {
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
struct slow_oam_info_t {
|
||||
u_int8_t info_type;
|
||||
u_int8_t info_len;
|
||||
u_int8_t oam_version;
|
||||
u_int8_t revision[2];
|
||||
u_int8_t state;
|
||||
u_int8_t oam_config;
|
||||
u_int8_t oam_pdu_config;
|
||||
u_int8_t oui[3];
|
||||
u_int8_t vendor_private[4];
|
||||
};
|
||||
|
||||
#define SLOW_OAM_INFO_TYPE_END_OF_TLV 0x00
|
||||
#define SLOW_OAM_INFO_TYPE_LOCAL 0x01
|
||||
#define SLOW_OAM_INFO_TYPE_REMOTE 0x02
|
||||
#define SLOW_OAM_INFO_TYPE_ORG_SPECIFIC 0xfe
|
||||
|
||||
static const struct tok slow_oam_info_type_values[] = {
|
||||
{ SLOW_OAM_INFO_TYPE_END_OF_TLV, "End of TLV marker" },
|
||||
{ SLOW_OAM_INFO_TYPE_LOCAL, "Local" },
|
||||
{ SLOW_OAM_INFO_TYPE_REMOTE, "Remote" },
|
||||
{ SLOW_OAM_INFO_TYPE_ORG_SPECIFIC, "Organization specific" },
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
#define SLOW_OAM_INFO_TYPE_LOCAL_REMOTE_MINLEN 16
|
||||
|
||||
#define OAM_INFO_TYPE_PARSER_MASK 0x3
|
||||
static const struct tok slow_oam_info_type_state_parser_values[] = {
|
||||
{ 0x00, "forwarding" },
|
||||
{ 0x01, "looping back" },
|
||||
{ 0x02, "discarding" },
|
||||
{ 0x03, "reserved" },
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
#define OAM_INFO_TYPE_MUX_MASK 0x4
|
||||
static const struct tok slow_oam_info_type_state_mux_values[] = {
|
||||
{ 0x00, "forwarding" },
|
||||
{ 0x04, "discarding" },
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
static const struct tok slow_oam_info_type_oam_config_values[] = {
|
||||
{ 0x01, "Active" },
|
||||
{ 0x02, "Unidirectional" },
|
||||
{ 0x04, "Remote-Loopback" },
|
||||
{ 0x08, "Link-Events" },
|
||||
{ 0x10, "Variable-Retrieval" },
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
/* 11 Bits */
|
||||
#define OAM_INFO_TYPE_PDU_SIZE_MASK 0x7ff
|
||||
|
||||
struct slow_oam_eventnotification_t {
|
||||
u_int8_t event_type;
|
||||
u_int8_t event_length;
|
||||
u_int8_t event_time_stamp[2];
|
||||
u_int8_t window[8];
|
||||
u_int8_t threshold[8];
|
||||
u_int8_t errors[8];
|
||||
u_int8_t errors_running_total[8];
|
||||
u_int8_t event_running_total[4];
|
||||
};
|
||||
|
||||
struct slow_oam_variablerequest_t {
|
||||
u_int8_t branch;
|
||||
u_int8_t leaf[2];
|
||||
};
|
||||
|
||||
struct slow_oam_variableresponse_t {
|
||||
u_int8_t branch;
|
||||
u_int8_t leaf[2];
|
||||
u_int8_t length;
|
||||
};
|
||||
|
||||
static const struct tok slow_oam_loopbackctrl_cmd_values[] = {
|
||||
{ 0x01, "Enable OAM Remote Loopback" },
|
||||
{ 0x02, "Disable OAM Remote Loopback" },
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
struct tlv_header_t {
|
||||
u_int8_t type;
|
||||
u_int8_t length;
|
||||
@ -357,18 +441,87 @@ void slow_oam_print(register const u_char *tptr, register u_int tlen) {
|
||||
u_int8_t code;
|
||||
};
|
||||
const struct slow_oam_common_header_t *slow_oam_common_header;
|
||||
|
||||
union {
|
||||
const struct slow_oam_info_t *slow_oam_info;
|
||||
const struct slow_oam_eventnotification_t *slow_oam_eventnotification;
|
||||
const struct slow_oam_variablerequest_t *slow_oam_variablerequest;
|
||||
const struct slow_oam_variableresponse_t *slow_oam_variableresponse;
|
||||
} tlv;
|
||||
|
||||
slow_oam_common_header = (struct slow_oam_common_header_t *)tptr;
|
||||
tptr += sizeof(struct slow_oam_common_header_t);
|
||||
tlen -= sizeof(struct slow_oam_common_header_t);
|
||||
|
||||
printf("Flags [ %s ], Code %s",
|
||||
printf("\n\tCode %s OAM PDU, Flags [%s]",
|
||||
tok2str(slow_oam_code_values, "Unknown (%u)", slow_oam_common_header->code),
|
||||
bittok2str(slow_oam_flag_values,
|
||||
"none",
|
||||
EXTRACT_16BITS(&slow_oam_common_header->flags)),
|
||||
tok2str(slow_oam_code_values, "Unknown (%u)", slow_oam_common_header->code));
|
||||
EXTRACT_16BITS(&slow_oam_common_header->flags)));
|
||||
|
||||
switch (slow_oam_common_header->code) {
|
||||
/* FIXME no codes yet known - just hexdump for now */
|
||||
case SLOW_OAM_CODE_INFO:
|
||||
tlv.slow_oam_info = (const struct slow_oam_info_t *)tptr;
|
||||
while (tlen > 0) {
|
||||
printf("\n\t %s Information Type (%u), Version %u, Rev %u, length %u",
|
||||
tok2str(slow_oam_info_type_values, "Reserved", tlv.slow_oam_info->info_type),
|
||||
tlv.slow_oam_info->info_type,
|
||||
tlv.slow_oam_info->oam_version,
|
||||
EXTRACT_16BITS(&tlv.slow_oam_info->revision),
|
||||
tlv.slow_oam_info->info_len);
|
||||
|
||||
switch (tlv.slow_oam_info->info_type) {
|
||||
case SLOW_OAM_INFO_TYPE_END_OF_TLV:
|
||||
|
||||
if (tlv.slow_oam_info->info_len != 0) {
|
||||
printf("\n\t ERROR: illegal length - should be 0");
|
||||
}
|
||||
return;
|
||||
|
||||
case SLOW_OAM_INFO_TYPE_LOCAL: /* identical format - fall through */
|
||||
case SLOW_OAM_INFO_TYPE_REMOTE:
|
||||
|
||||
if (tlv.slow_oam_info->info_len !=
|
||||
SLOW_OAM_INFO_TYPE_LOCAL_REMOTE_MINLEN) {
|
||||
printf("\n\t ERROR: illegal length - should be %u",
|
||||
SLOW_OAM_INFO_TYPE_LOCAL_REMOTE_MINLEN);
|
||||
return;
|
||||
}
|
||||
|
||||
printf("\n\t State-MUX-Action %s, State-Parser-Action %s",
|
||||
tok2str(slow_oam_info_type_state_parser_values, "Reserved",
|
||||
tlv.slow_oam_info->state & OAM_INFO_TYPE_PARSER_MASK),
|
||||
tok2str(slow_oam_info_type_state_mux_values, "Reserved",
|
||||
tlv.slow_oam_info->state & OAM_INFO_TYPE_MUX_MASK));
|
||||
printf("\n\t OAM-Config Flags [%s], OAM-PDU-Config max-PDU size %u",
|
||||
bittok2str(slow_oam_info_type_oam_config_values, "none",
|
||||
tlv.slow_oam_info->oam_config),
|
||||
EXTRACT_16BITS(&tlv.slow_oam_info->oam_pdu_config) &
|
||||
OAM_INFO_TYPE_PDU_SIZE_MASK);
|
||||
printf("\n\t OUI %s (0x%06x), Vendor-Private 0x%08x",
|
||||
tok2str(oui_values, "Unknown",
|
||||
EXTRACT_24BITS(&tlv.slow_oam_info->oui)),
|
||||
EXTRACT_24BITS(&tlv.slow_oam_info->oui),
|
||||
EXTRACT_32BITS(&tlv.slow_oam_info->vendor_private));
|
||||
break;
|
||||
|
||||
case SLOW_OAM_INFO_TYPE_ORG_SPECIFIC:
|
||||
/* FIXME hexdump */
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
/* infinite loop check */
|
||||
if (!tlv.slow_oam_info->info_len) {
|
||||
return;
|
||||
}
|
||||
tlen -= tlv.slow_oam_info->info_len;
|
||||
tptr += tlv.slow_oam_info->info_len;
|
||||
}
|
||||
break;
|
||||
/* FIXME no codes yet known - just hexdump for now */
|
||||
case SLOW_OAM_CODE_EVENT_NOTIF:
|
||||
case SLOW_OAM_CODE_VAR_REQUEST:
|
||||
case SLOW_OAM_CODE_VAR_RESPONSE:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user